EP 1034209 A1 20000913 - AQUEOUS SILICON DISPERSIONS, FORMULATIONS IN PARTICULAR OF PAINTS CONTAINING THEM AND ONE METHOD FOR PREPARING THEM
Title (en)
AQUEOUS SILICON DISPERSIONS, FORMULATIONS IN PARTICULAR OF PAINTS CONTAINING THEM AND ONE METHOD FOR PREPARING THEM
Title (de)
WÄSSRIGE SILIKONDISPERSIONEN, DIESE ENTHALTENDE ZUSAMMENSETZUNGEN, INSBESONDERE FARBEN, UND EIN HERSTELLUNGSVERFAHREN
Title (fr)
DISPERSIONS SILICONES AQUEUSES, FORMULATIONS NOTAMMENT DE PEINTURES LES COMPRENANT ET L'UN DE LEUR PROCEDE DE PREPARATION
Publication
Application
Priority
- FR 9802449 W 19981117
- FR 9714681 A 19971118
Abstract (en)
[origin: WO9925757A1] The invention concerns an aqueous silicon dispersion containing polyorganosiloxanes (POS) cross-linkable or cross-linked by condensation polymerisation. The aim of the invention is to provide a dispersion of this type which remedies the drawbacks of known dispersions, and capable of being properly and sufficiently cross-linked into an elastomer which provides the final application (e.g. paint) with suitable properties in particular mechanical and rheological. The invention achieves this aim by providing an aqueous silicon dispersion that can be used particularly in the formulation of paint and is characterised in that the droplets of the non-aqueous phase which constitute it are obtained from a POS resin A cross-linkable by OH/OH or OH/OR condensation and comprising at least 50 % mol of siloxyl units (T(R<a>SiO3/2); and it also comprises a basic activator B such as a hydroxylated POS resin, a condensation catalyst such as tin salt, a co-crosslinking agent D such as trialkoxysilane hydrolysate and a surfactant E; said compounds being selected so as to enable cross-linking inside the droplets of the non-aqueous phase to obtain in situ in emulsion form a cross-linked silicon dispersed phase with increased molecular weight. The invention is applicable to formulation of paints or the like, of sealing materials (sealant) or other building material.
IPC 1-7
IPC 8 full level
C08J 3/03 (2006.01); C08L 83/04 (2006.01)
CPC (source: EP)
C08J 3/03 (2013.01); C08L 83/04 (2013.01); C08G 77/045 (2013.01); C08G 77/16 (2013.01); C08G 77/80 (2013.01); C08J 2383/04 (2013.01)
C-Set (source: EP)
Designated contracting state (EPC)
AT BE DE FR GB IT NL
DOCDB simple family (publication)
FR 2771098 A1 19990521; FR 2771098 B1 20040813; AT E258948 T1 20040215; AU 1243599 A 19990607; DE 69821522 D1 20040311; DE 69821522 T2 20040708; EP 1034209 A1 20000913; EP 1034209 B1 20040204; WO 9925757 A1 19990527
DOCDB simple family (application)
FR 9714681 A 19971118; AT 98955675 T 19981117; AU 1243599 A 19981117; DE 69821522 T 19981117; EP 98955675 A 19981117; FR 9802449 W 19981117